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Saline and alkaline soils in India are commonly referred to as "Kallar." These types of soils are characterized by high levels of salt content or alkalinity, which makes them unsuitable for most crops. Option 1 is the correct answer because "Kallar" specifically denotes these types of soils in Indian agricultural terminology.
To provide further clarity, let`s briefly explain the other options:
- Option 2: "Khadar" refers to floodplain soils along riverbanks, which are typically fertile and suitable for cultivation.
- Option 3: "Regur" refers to black soils that are clayey and have high fertility, found in regions with semi-arid to tropical climates in India.
- Option 4: "Bangar" refers to older alluvial soils found in river valleys, which can be highly fertile and suitable for agriculture.
Therefore, based on the characteristics of saline and alkaline soils, option 1, "Kallar," is the correct term used in India.